/**
 * API Adapter for converting between internal and external representations
 *
 * Internal format uses:
 * - Square indices (0-63)
 * - Piece enums
 * - InternalColor enum
 *
 * External format (v1 API) uses:
 * - Square strings (A1-H8)
 * - Piece symbols (K, Q, R, B, N, P, k, q, r, b, n, p)
 * - Color strings ('white', 'black')
 */
import { InternalBoard, BoardConfig, MovesMap, Piece, PieceSymbol, InternalColor, Color, Square, SquareIndex } from '../types';
import { InternalMove } from '../types/move.types';
/**
 * Convert internal board to public board configuration
 *
 * @param board - Internal board representation
 * @returns Public board configuration (v1 API format)
 */
export declare function boardToConfig(board: InternalBoard): BoardConfig;
/**
 * Convert public board configuration to internal board
 *
 * @param config - Public board configuration
 * @returns Internal board representation
 */
export declare function configToBoard(config: BoardConfig): InternalBoard;
/**
 * Convert board configuration to FEN string
 *
 * @param config - Public board configuration
 * @returns FEN string
 */
export declare function configToFEN(config: BoardConfig): string;
/**
 * Convert internal moves to public moves map
 *
 * @param moves - Array of internal moves
 * @returns Public moves map (from-square -> [to-squares])
 */
export declare function movesToMap(moves: InternalMove[]): MovesMap;
/**
 * Convert internal moves from a specific square to array of to-squares
 *
 * @param moves - Array of internal moves
 * @param fromIndex - From square index
 * @returns Array of to-square strings
 */
export declare function movesFromSquare(moves: InternalMove[], fromIndex: SquareIndex): Square[];
/**
 * Convert piece enum to piece symbol
 *
 * @param piece - Internal piece enum
 * @returns Piece symbol or null if empty
 */
export declare function pieceToSymbol(piece: Piece): PieceSymbol | null;
/**
 * Convert piece symbol to piece enum
 *
 * @param symbol - Piece symbol
 * @returns Internal piece enum
 */
export declare function symbolToPiece(symbol: PieceSymbol): Piece;
/**
 * Convert color string to internal color
 *
 * @param color - Color string
 * @returns Internal color enum
 */
export declare function colorToInternal(color: Color): InternalColor;
/**
 * Convert internal color to color string
 *
 * @param color - Internal color enum
 * @returns Color string
 */
export declare function internalToColor(color: InternalColor): Color;
/**
 * Normalize square string to uppercase (A1-H8)
 * V1 API accepts case-insensitive input
 *
 * @param square - Square string (case-insensitive)
 * @returns Normalized uppercase square string
 */
export declare function normalizeSquare(square: string): string;
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